Aside from a brief (and fairly pointless) visit to Windermere and a scene with Mikumo proposing they use the ruins to counter the Song of the Wind, this episode was given over completely to celebrating Freyja’s fifteenth birthday with a surprise party. As it’s the middle of a Windermeran’s lifespan, Maki and Reina wanted to make it special.
In other words, there’s no action whatsoever, nor is there any movement on the galactic war front. The episode is carried only by the characters, so how much you enjoyed it depends on how much you like and/or care about said characters when they’re not fighting (or singing) to save the galaxy.
I went on record as saying I liked how desperate things had gotten a couple weeks back when the lights went off on the Island Ship, but now that Elysion is docked with it, there’s little difference between the ship and being on Ragna, which kind of undermines the peril.
That said, I did appreciate the efforts made to expound on the Freyja/Hayate/Mirage triangle in a less stressful environment. At the same time, Mirage’s shopping “date” makes it clear Hayate is “denser than a black hole”, as his stalkers put it.
He’s aware that he has a special bond with Freyja (and even hears her song from afar), but he doesn’t come right out an call it romance, nor is he even a little aware of Mirage’s burgeoning feelings for him. Mirage plays the good friend to both, though, when the night of the party comes.
The party is when Freyja and the episode shine, as her story about when she discovered Earth music and started singing for her villagewas actually very moving. Her surprise and elation at everyone coming together for her sake was also infectious.
Finally, Hayate is very late to the party, but for a good reason: after a lengthy but fruitless trip to the mall, he realized the best birthday gift he could give her was home, in the form of snow. And if he realized how close he was to Freyja before, their little moment in the snow was likely the final nail the coffin for poor Mirage and her unacknowledged, unrequited love.
Then again, there were moments for both Ranka Lee and Sheryl Nome when one thought the other had won the Alto Sweepstakes, and it ended up being a triangle that was never broken in Frontier. But in terms of who made the most of this brief respite from intergalactic warfare, I’m inclined to place Freyja firmly in the winner’s column.